Patents by Inventor Sakichi Minoura

Sakichi Minoura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Impact wrench having an improved air regulator
    Patent number: 5377769
    Abstract: An impact wrench having an improved air regulator comprises a cylindrical pipe provided on a handle, an air supply valve movably inserted in a back section of the cylindrical pipe, and a changeover valve movably inserted in a front section of the cylindrical pipe. The cylindrical pipe has a first air supply inlet and a second air supply inlet. The air supply valve has several air supply regulating slots of different diameters. The changeover valve has an an air supply reversing slot. The desired one of the air supply regulating slots is adapted to communicate with the first air supply inlet, so that the air flow to the air motor is regulated in the cylindrical pipe, thus obtaing a desired torque. The air supply reversing slot is adapted to communicate with the second air supply inlet only when the air motor is rotated counterclockwise.
    Type: Grant
    Filed: December 2, 1993
    Date of Patent: January 3, 1995
    Assignee: Aichi Toyota Jidosha Kabushikikaisha
    Inventors: Hiromi Hasuo, Kunio Suzuki, Sakichi Minoura